/* roulang page: index */
:root{
  --brand-1:#0FB48A;
  --brand-2:#14B8D4;
  --brand-3:#0A7A5E;
  --brand-4:#D6F5EC;
  --accent:#FF8A3D;
  --accent-deep:#E86C1F;
  --accent-soft:#FFF1E6;
  --ink-900:#0B1A17;
  --ink-700:#23403A;
  --ink-500:#5C7A73;
  --ink-300:#A9BDB7;
  --line:#E3EDEA;
  --page-bg:#F4F8F7;
  --card-bg:#FFFFFF;
  --deep-bg:#07231E;
  --deep-bg-2:#0C3129;
  --success:#12A87A;
  --warning:#F2A33C;
  --danger:#E2544A;
  --info:#14B8D4;
  --grad:linear-gradient(135deg,#0FB48A 0%,#14B8D4 100%);
  --grad-deep:linear-gradient(135deg,#20C99B 0%,#2ACBE4 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --sh-card:0 12px 32px rgba(9,60,50,.08);
  --sh-hover:0 20px 48px rgba(9,60,50,.14);
  --sh-float:0 10px 28px rgba(7,35,30,.28);
  --sh-nav:0 6px 24px rgba(9,60,50,.10);
  --ease:cubic-bezier(.4,0,.2,1);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}
.container{max-width:var(--max);margin:0 auto;padding:0 32px;width:100%}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--brand-3);background:var(--brand-4);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.section-title{
  font-size:clamp(24px,2.8vw,36px);
  font-weight:700;line-height:1.3;color:var(--ink-900);letter-spacing:-.4px;
}
.section-sub{margin-top:14px;font-size:16px;color:var(--ink-500);line-height:1.8;max-width:640px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;flex-wrap:wrap}
.section-more{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-3);
  transition:color .25s var(--ease);
}
.section-more:hover{color:var(--accent-deep)}
.section-more span{transition:transform .25s var(--ease)}
.section-more:hover span{transform:translateX(4px)}
.divider{width:48px;height:3px;border-radius:3px;background:var(--grad);margin:18px 0 0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:13px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),filter .25s var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(15,180,138,.28)}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(15,180,138,.34)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.45);color:#fff;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn--ghost:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn--outline{background:#fff;border-color:var(--line);color:var(--brand-3)}
.btn--outline:hover{background:var(--brand-4);border-color:var(--brand-1);transform:translateY(-2px)}
.btn--dark{background:var(--ink-900);color:#fff}
.btn--dark:hover{background:var(--brand-3);transform:translateY(-2px)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-nav)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo__mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;letter-spacing:-.5px;
  box-shadow:0 6px 16px rgba(15,180,138,.32);
}
.logo__text{display:flex;flex-direction:column;line-height:1.1}
.logo__name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.2px;text-shadow:0 1px 8px rgba(0,0,0,.25)}
.logo__sub{font-size:11px;font-weight:500;color:rgba(255,255,255,.78);letter-spacing:2px}
.is-scrolled .logo__name{color:var(--ink-900);text-shadow:none}
.is-scrolled .logo__sub{color:var(--ink-500)}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__link{
  position:relative;font-size:15px;font-weight:500;padding:6px 0;
  color:rgba(255,255,255,.90);text-shadow:0 1px 8px rgba(0,0,0,.22);
  transition:color .25s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:var(--grad);transition:width .28s var(--ease);
}
.nav__link:hover::after,.nav__link.is-active::after{width:100%}
.nav__link:hover{color:#fff}
.nav__link.is-active{color:#fff;font-weight:600}
.is-scrolled .nav__link{color:var(--ink-700);text-shadow:none}
.is-scrolled .nav__link:hover{color:var(--brand-3)}
.is-scrolled .nav__link.is-active{color:var(--brand-3)}
.nav__right{display:flex;align-items:center;gap:14px}
.nav__search{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.10);color:#fff;
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.nav__search:hover{background:rgba(255,255,255,.24)}
.is-scrolled .nav__search{border-color:var(--line);background:#fff;color:var(--ink-700)}
.is-scrolled .nav__search:hover{background:var(--brand-4);color:var(--brand-3)}
.nav__toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.12);color:#fff;align-items:center;justify-content:center;
}
.is-scrolled .nav__toggle{border-color:var(--line);background:#fff;color:var(--ink-900)}
.nav__toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav__toggle span::before,.nav__toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav__toggle span::before{top:-6px}
.nav__toggle span::after{top:6px}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;background:rgba(7,35,30,.45);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__panel{
  position:absolute;top:12px;left:12px;right:12px;
  background:#fff;border-radius:20px;padding:22px;
  transform:translateY(-12px);transition:transform .3s var(--ease);
  max-height:calc(100vh - 24px);overflow-y:auto;
}
.drawer.is-open .drawer__panel{transform:translateY(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer__close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink-700);font-size:18px}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 14px;border-radius:14px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background .25s var(--ease);
}
.drawer__link:hover,.drawer__link.is-active{background:var(--brand-4);color:var(--brand-3)}
.drawer__foot{margin-top:16px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:130px 0 90px;overflow:hidden;background:var(--deep-bg)}
.hero__bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;background-repeat:no-repeat}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,180,138,.88) 0%,rgba(20,184,212,.74) 48%,rgba(7,35,30,.88) 100%);
}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;width:100%}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;letter-spacing:.5px;
  color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  padding:7px 16px;border-radius:999px;backdrop-filter:blur(6px);
}
.hero__eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero__title{
  margin-top:24px;
  font-size:clamp(30px,4.4vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.5px;color:#fff;
  text-shadow:0 2px 18px rgba(3,26,22,.35);
}
.hero__sub{margin-top:20px;font-size:clamp(15px,1.35vw,18px);line-height:1.8;color:rgba(255,255,255,.88);max-width:600px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:42px}
.hero__stats li{
  display:flex;flex-direction:column;gap:2px;padding:12px 20px;border-radius:999px;
  border:1px solid transparent;
  background:linear-gradient(rgba(255,255,255,.14),rgba(255,255,255,.14)) padding-box,var(--grad) border-box;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.hero__stats strong{
  font-size:20px;font-weight:800;line-height:1.2;
  background:var(--grad-deep);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__stats strong em{font-style:normal;font-size:13px;font-weight:700}
.hero__stats span{font-size:12px;color:rgba(255,255,255,.80);letter-spacing:.4px}
.hero__media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.28);box-shadow:var(--sh-float)}
.hero__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero__media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(7,35,30,0) 45%,rgba(7,35,30,.45) 100%);
}
.hero__scroll{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:12px;letter-spacing:2px;color:rgba(255,255,255,.72);
}
.hero__scroll i{width:1px;height:34px;background:linear-gradient(180deg,rgba(255,255,255,.85),rgba(255,255,255,0));display:block}

/* ---------- Selling ---------- */
.selling-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:24px}
.card{
  background:var(--card-bg);border-radius:var(--r-lg);padding:28px;
  border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.card--grad{position:relative;border-color:transparent}
.card--grad::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:1px;
  background:var(--grad);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
  opacity:.65;transition:opacity .25s var(--ease);
}
.card--grad:hover::before{opacity:1}
.card-cover{border-radius:var(--r-md);overflow:hidden;margin-bottom:22px}
.card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover}
.card-title{font-size:20px;font-weight:700;color:var(--ink-900);line-height:1.4}
.card-desc{margin-top:10px;font-size:15px;color:var(--ink-500);line-height:1.8}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);line-height:1.7}
.point-list li::before{content:"";flex:0 0 10px;height:10px;margin-top:8px;border-radius:3px;background:var(--grad)}
.selling-col{display:grid;gap:24px;align-content:stretch}
.selling-col .card{display:flex;flex-direction:column;justify-content:center}
.icon-badge{
  width:48px;height:48px;border-radius:14px;background:var(--brand-4);color:var(--brand-3);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:18px;
}
.selling-col .card:hover .icon-badge{background:var(--grad);color:#fff}

/* ---------- Demo ---------- */
.demo{background:#fff}
.demo-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.device{border-radius:var(--r-lg);border:1px solid var(--line);background:#fff;box-shadow:var(--sh-card);overflow:hidden}
.device__bar{height:44px;display:flex;align-items:center;gap:7px;padding:0 18px;border-bottom:1px solid var(--line);background:#F8FCFB}
.device__bar i{width:10px;height:10px;border-radius:50%;display:block;background:var(--ink-300)}
.device__bar i:first-child{background:#FF8A3D}
.device__bar i:nth-child(2){background:#F2A33C}
.device__bar i:nth-child(3){background:var(--brand-1)}
.device__screen{position:relative;background:var(--brand-4)}
.device__screen img{width:100%;aspect-ratio:16/10;object-fit:cover}
.steps{display:flex;flex-direction:column;gap:6px}
.step{position:relative;display:flex;gap:18px;padding:14px 0}
.step__num{
  flex:0 0 44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;
  box-shadow:0 8px 18px rgba(15,180,138,.26);position:relative;z-index:2;
}
.step:not(:last-child)::after{
  content:"";position:absolute;left:21px;top:56px;bottom:-8px;width:2px;
  background:linear-gradient(180deg,var(--brand-4),rgba(214,245,236,0));
}
.step h3{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;margin-bottom:4px}
.step p{font-size:14px;color:var(--ink-500);line-height:1.75}

/* ---------- Proof ---------- */
.proof{background:var(--deep-bg);color:#fff;position:relative;overflow:hidden}
.proof::before{
  content:"";position:absolute;top:-160px;right:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,184,212,.28),rgba(20,184,212,0) 68%);
}
.proof .section-title{color:#fff}
.proof .section-sub{color:rgba(255,255,255,.68)}
.proof .eyebrow{background:rgba(255,255,255,.12);color:#7FE6CE}
.proof-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);
  margin-bottom:48px;position:relative;z-index:2;
}
.proof-stats li{padding:30px 22px;border-right:1px solid rgba(255,255,255,.12)}
.proof-stats li:last-child{border-right:0}
.proof-stats strong{
  display:block;font-size:clamp(28px,3vw,40px);font-weight:800;line-height:1.15;
  background:var(--grad-deep);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.proof-stats span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.70)}
.proof-cards{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:20px;position:relative;z-index:2}
.quote{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);
  padding:26px;display:flex;flex-direction:column;gap:16px;backdrop-filter:blur(6px);
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.quote:hover{transform:translateY(-4px);background:rgba(255,255,255,.11)}
.quote__mark{font-size:34px;font-weight:800;line-height:1;background:var(--grad-deep);-webkit-background-clip:text;background-clip:text;color:transparent}
.quote p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.86)}
.quote__foot{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
.quote__avatar{width:36px;height:36px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff}
.quote__name{font-size:14px;font-weight:600;color:#fff}
.quote__role{font-size:12px;color:rgba(255,255,255,.60)}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:#fff;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;
  box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.news-card__media{position:relative;background:linear-gradient(90deg,var(--brand-4),var(--line))}
.news-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-card__tag{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand-3);background:rgba(255,255,255,.92);backdrop-filter:blur(4px);
}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-card__title{
  font-size:18px;font-weight:700;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-card__title{color:var(--brand-3)}
.news-card__excerpt{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:18px;font-size:13px;color:var(--ink-300);
}
.news-card__arrow{font-weight:600;color:var(--brand-3);display:inline-flex;align-items:center;gap:5px;transition:transform .25s var(--ease)}
.news-card:hover .news-card__arrow{transform:translateX(3px)}
.news-empty{
  grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);
  padding:64px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.news-empty__icon{
  width:56px;height:56px;border-radius:50%;background:var(--brand-4);color:var(--brand-3);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.news-empty p{font-size:15px;color:var(--ink-500)}

/* ---------- Price ---------- */
.price{background:#fff}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 28px;display:flex;flex-direction:column;box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.plan--featured{border-color:transparent;transform:translateY(-8px);box-shadow:var(--sh-hover)}
.plan--featured::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:2px;background:var(--grad);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.plan--featured:hover{transform:translateY(-12px)}
.plan__badge{
  position:absolute;top:-13px;left:28px;padding:5px 14px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 8px 18px rgba(255,138,61,.34);
}
.plan__name{font-size:19px;font-weight:700;color:var(--ink-900)}
.plan__note{margin-top:6px;font-size:13px;color:var(--ink-500)}
.plan__price{display:flex;align-items:baseline;gap:6px;margin:22px 0 6px;color:var(--ink-900)}
.plan__price b{font-size:38px;font-weight:800;line-height:1;letter-spacing:-1px}
.plan__price i{font-style:normal;font-size:15px;font-weight:600;color:var(--ink-500)}
.plan__list{margin:22px 0 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.plan__list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--ink-700)}
.plan__list li::before{content:"✓";flex:0 0 auto;color:var(--brand-1);font-weight:800;font-size:14px}
.plan__list li.is-off{color:var(--ink-300);text-decoration:line-through}
.plan__list li.is-off::before{content:"—";color:var(--ink-300)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.faq-item:hover{border-color:var(--brand-4)}
.faq-item.is-open{background:rgba(214,245,236,.30);border-color:var(--brand-1);box-shadow:var(--sh-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q span{position:relative;padding-left:16px}
.faq-q span::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:18px;border-radius:3px;background:var(--grad);opacity:.6;transition:opacity .25s var(--ease);
}
.faq-item.is-open .faq-q span::before{opacity:1}
.faq-arrow{
  flex:0 0 30px;height:30px;border-radius:50%;background:var(--brand-4);color:var(--brand-3);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 24px 22px 40px;font-size:15px;line-height:1.85;color:var(--ink-700)}

/* ---------- Contact ---------- */
.contact{position:relative;background:var(--deep-bg-2);color:#fff;overflow:hidden}
.contact::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,180,138,.34) 0%,rgba(20,184,212,.20) 45%,rgba(7,35,30,.85) 100%);
}
.contact__inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.contact .section-title{color:#fff}
.contact__text{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.80);max-width:520px}
.contact__list{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.contact__list li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.86)}
.contact__list li::before{content:"";flex:0 0 8px;height:8px;margin-top:9px;border-radius:2px;background:var(--grad-deep)}
.form-card{background:#fff;border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-float);color:var(--ink-700)}
.form-card h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.form-card .form-note{font-size:13px;color:var(--ink-500);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 14px;height:48px;
  font-family:inherit;font-size:15px;color:var(--ink-900);background:#fff;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);outline:none;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(15,180,138,.14);
}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--danger)}
.field__err{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.is-error .field__err{display:block}
.checkline{display:flex;align-items:flex-start;gap:10px;margin:4px 0 20px;font-size:13px;color:var(--ink-500);line-height:1.7}
.checkline input{appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:0 0 18px;margin-top:2px;border:1px solid var(--line);border-radius:5px;background:#fff;position:relative;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease)}
.checkline input:checked{background:var(--grad);border-color:transparent}
.checkline input:checked::after{content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.form-status{margin-top:14px;font-size:14px;line-height:1.7;display:none}
.form-status.is-ok{display:block;color:var(--success)}
.form-status.is-err{display:block;color:var(--danger)}
.spinner{
  width:15px;height:15px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;
  display:inline-block;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep-bg);color:rgba(255,255,255,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo__name{color:#fff}
.footer-brand .logo__sub{color:rgba(255,255,255,.60)}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.4px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .25s var(--ease)}
.footer-links a:hover{color:var(--brand-2)}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(255,255,255,.68)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.68)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ---------- Floating ---------- */
.fab-group{position:fixed;right:28px;bottom:32px;z-index:110;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.fab-primary{
  display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;box-shadow:var(--sh-float);
  transition:transform .25s var(--ease),filter .25s var(--ease);position:relative;
}
.fab-primary::after{
  content:"";position:absolute;inset:-6px;border-radius:999px;border:1px solid rgba(15,180,138,.45);
  animation:pulse 2.6s ease-out infinite;
}
@keyframes pulse{0%{transform:scale(.96);opacity:.8}70%{transform:scale(1.06);opacity:0}100%{opacity:0}}
.fab-primary:hover{transform:translateY(-2px);filter:brightness(1.05)}
.fab-top{
  width:46px;height:46px;border-radius:50%;background:#fff;color:var(--brand-3);border:1px solid var(--line);
  box-shadow:var(--sh-card);display:flex;align-items:center;justify-content:center;font-size:16px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),visibility .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.fab-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.fab-top:hover{background:var(--brand-4)}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:115;height:56px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 18px;gap:14px;
}
.mobile-bar span{font-size:14px;color:var(--ink-500)}
.mobile-bar .btn{padding:10px 20px;font-size:14px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .nav__links{display:none}
  .nav__toggle{display:flex}
  .nav__search{display:none}
  .hero{min-height:auto;padding:120px 0 72px}
  .hero__inner{grid-template-columns:1fr;gap:42px}
  .hero__media img{aspect-ratio:16/10}
  .hero__scroll{display:none}
  .selling-grid{grid-template-columns:1fr}
  .demo-grid{grid-template-columns:1fr;gap:36px}
  .proof-stats{grid-template-columns:repeat(2,1fr)}
  .proof-stats li:nth-child(2){border-right:0}
  .proof-stats li:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12)}
  .proof-cards{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan--featured{transform:none}
  .plan--featured:hover{transform:translateY(-4px)}
  .contact__inner{grid-template-columns:1fr;gap:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .fab-group{right:18px;bottom:24px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .nav{height:60px}
  .logo__mark{width:34px;height:34px;border-radius:10px;font-size:15px}
  .logo__name{font-size:15.5px}
  .logo__sub{font-size:10px;letter-spacing:1.5px}
  .nav__cta{display:none}
  .hero{padding:100px 0 60px}
  .hero__title{font-size:clamp(26px,7.6vw,34px)}
  .hero__sub{font-size:15px}
  .hero__actions{gap:10px}
  .hero__actions .btn{flex:1 1 auto;padding:12px 18px;font-size:14.5px}
  .hero__stats{gap:9px;margin-top:30px}
  .hero__stats li{padding:10px 15px}
  .hero__stats strong{font-size:17px}
  .hero__stats span{font-size:11px}
  .card{padding:20px;border-radius:var(--r-md)}
  .news-grid{grid-template-columns:1fr}
  .proof-stats{grid-template-columns:1fr}
  .proof-stats li{border-right:0;padding:20px 0}
  .proof-stats li:not(:last-child){border-bottom:1px solid rgba(255,255,255,.12)}
  .proof-stats li:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12)}
  .form-card{padding:22px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding-bottom:78px}
  .fab-group{display:none}
  .mobile-bar{display:flex}
  .faq-q{padding:16px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px 34px}
  .device__bar{height:38px}
}
@media (max-width:480px){
  .hero__title{font-size:25px}
  .eyebrow{font-size:12px;padding:5px 12px}
  .section-title{font-size:22px}
  .hero__stats li{flex:1 1 44%}
}

/* roulang page: article */
:root{
  --brand-1:#0FB48A;
  --brand-2:#14B8D4;
  --brand-3:#0A7A5E;
  --brand-4:#D6F5EC;
  --accent:#FF8A3D;
  --accent-deep:#E86C1F;
  --accent-soft:#FFF1E6;
  --ink-900:#0B1A17;
  --ink-700:#23403A;
  --ink-500:#5C7A73;
  --ink-300:#A9BDB7;
  --line:#E3EDEA;
  --page-bg:#F4F8F7;
  --card-bg:#FFFFFF;
  --deep-bg:#07231E;
  --deep-bg-2:#0C3129;
  --success:#12A87A;
  --warning:#F2A33C;
  --danger:#E2544A;
  --info:#14B8D4;
  --grad:linear-gradient(135deg,#0FB48A 0%,#14B8D4 100%);
  --grad-soft:linear-gradient(135deg,rgba(15,180,138,.14) 0%,rgba(20,184,212,.14) 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 12px 32px rgba(9,60,50,.08);
  --shadow-hover:0 20px 48px rgba(9,60,50,.14);
  --shadow-nav:0 6px 24px rgba(9,60,50,.10);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --num:"DIN Alternate","Inter",-apple-system,"PingFang SC",sans-serif;
  --t:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--page-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-3);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent-deep);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
@supports not (background-clip:text){.grad-text{color:var(--brand-1);}}
.rule{width:48px;height:3px;border-radius:3px;background:var(--grad);border:none;margin:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled,
.site-header.is-solid{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-nav);
}
.nav{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;}
.site-header.is-scrolled .logo,
.site-header.is-solid .logo{color:var(--ink-900);}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad);
  color:#fff;font-size:19px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(15,180,138,.35);
  flex:0 0 auto;
}
.logo__text{display:flex;flex-direction:column;line-height:1.1;}
.logo__name{font-size:17px;font-weight:800;letter-spacing:-.2px;}
.logo__sub{font-size:11px;font-weight:500;opacity:.75;letter-spacing:2px;}
.nav__links{display:flex;align-items:center;gap:6px;}
.nav__link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  font-size:15px;font-weight:600;
  color:rgba(255,255,255,.92);
  border-radius:10px;
  transition:color var(--t),background var(--t);
}
.site-header.is-scrolled .nav__link,
.site-header.is-solid .nav__link{color:var(--ink-700);}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  border-radius:2px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav__link:hover,.nav__link.is-active{color:#fff;}
.site-header.is-scrolled .nav__link:hover,
.site-header.is-scrolled .nav__link.is-active,
.site-header.is-solid .nav__link:hover,
.site-header.is-solid .nav__link.is-active{color:var(--brand-3);}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1);}
.nav__actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:700;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),filter var(--t);
  white-space:nowrap;
}
.btn--primary{
  background:var(--grad);color:#fff;
  box-shadow:0 10px 24px rgba(15,180,138,.30);
}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(15,180,138,.38);color:#fff;}
.btn--ghost{
  background:rgba(255,255,255,.14);
  color:#fff;
  border:1px solid rgba(255,255,255,.55);
  backdrop-filter:blur(8px);
}
.btn--ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.btn--outline{
  background:#fff;color:var(--brand-3);
  border:1px solid var(--brand-4);
  box-shadow:0 0 0 0 rgba(15,180,138,.18);
}
.btn--outline:hover{background:var(--brand-4);color:var(--brand-3);transform:translateY(-2px);}
.btn--text{height:auto;padding:0;color:var(--brand-3);font-weight:700;border-radius:0;}
.btn--text:hover{color:var(--accent-deep);}
.btn--text .arrow{transition:transform var(--t);display:inline-block;}
.btn--text:hover .arrow{transform:translateX(3px);}
.btn--block{width:100%;}
.nav__toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.35);
  align-items:center;justify-content:center;
}
.site-header.is-scrolled .nav__toggle,
.site-header.is-solid .nav__toggle{background:var(--brand-4);border-color:var(--brand-4);}
.nav__toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.site-header.is-scrolled .nav__toggle span,
.site-header.is-solid .nav__toggle span{background:var(--brand-3);}
.nav__toggle span::before,.nav__toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:inherit;border-radius:2px;
}
.nav__toggle span::before{top:-6px;}
.nav__toggle span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(7,35,30,.45);
  opacity:0;pointer-events:none;
  transition:opacity var(--t);
}
.drawer.is-open{opacity:1;pointer-events:auto;}
.drawer__panel{
  position:absolute;top:12px;right:12px;left:12px;
  background:#fff;border-radius:20px;
  padding:18px;
  box-shadow:0 24px 60px rgba(7,35,30,.32);
  transform:translateY(-12px);
  transition:transform var(--t);
}
.drawer.is-open .drawer__panel{transform:translateY(0);}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 14px;
  border-radius:12px;font-weight:600;color:var(--ink-900);
}
.drawer__link:hover,.drawer__link.is-active{background:var(--brand-4);color:var(--brand-3);}
.drawer__close{
  width:44px;height:44px;border-radius:12px;background:var(--brand-4);
  color:var(--brand-3);font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-left:auto;
}
.drawer__head{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.drawer__cta{margin-top:12px;}

/* ---------- 文章页头 ---------- */
.article-head{
  padding:132px 0 40px;
  background:
    radial-gradient(900px 320px at 12% -10%,rgba(15,180,138,.16),transparent 70%),
    radial-gradient(700px 300px at 92% 0%,rgba(20,184,212,.14),transparent 72%),
    var(--page-bg);
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-500);margin-bottom:18px;
}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-3);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-900);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.4px;
  color:var(--ink-900);
  max-width:860px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  margin-top:22px;font-size:13px;color:var(--ink-500);
}
.tag{
  display:inline-flex;align-items:center;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-4);color:var(--brand-3);
  font-size:12px;font-weight:700;letter-spacing:.3px;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--ink-300);}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:40px;
  align-items:start;
}
.article-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:44px 48px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700);max-width:100%;}
.article-body > * + *{margin-top:1.15em;}
.article-body p{margin:0;}
.article-body > p:first-of-type{font-size:18px;color:var(--ink-900);}
.article-body h2{
  position:relative;
  font-size:24px;font-weight:700;line-height:1.4;color:var(--ink-900);
  margin-top:40px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--grad);
}
.article-body h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-top:32px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin-top:24px;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:22px;margin-top:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:50%;background:var(--grad);
}
.article-body ol{list-style:none;counter-reset:olnum;padding-left:0;}
.article-body ol li{position:relative;counter-increment:olnum;padding-left:40px;margin-top:12px;}
.article-body ol li::before{
  content:counter(olnum);
  position:absolute;left:0;top:.28em;
  width:26px;height:26px;border-radius:50%;
  background:var(--grad);color:#fff;
  font-family:var(--num);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin-left:0;margin-right:0;
  padding:18px 22px;
  background:rgba(214,245,236,.5);
  border-left:4px solid;
  border-image:var(--grad) 1;
  border-radius:12px;
  color:var(--ink-700);
}
.article-body a{color:var(--brand-3);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-deep);}
.article-body img{border-radius:16px;margin:26px auto;box-shadow:var(--shadow-card);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px;}
.article-body code{
  background:#F0F5F3;border:1px solid var(--line);
  padding:2px 6px;border-radius:6px;font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink-900);
}
.article-body pre{
  background:var(--deep-bg);color:#DDF3EC;
  padding:18px 20px;border-radius:14px;overflow-x:auto;
  font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:none;color:inherit;padding:0;}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;}
.article-body table{border-collapse:collapse;width:100%;min-width:520px;font-size:15px;}
.article-body th{background:var(--brand-4);color:var(--ink-900);font-weight:700;text-align:left;padding:12px 16px;}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);}
.article-empty{
  text-align:center;padding:60px 20px;
}
.article-empty .icon{
  width:64px;height:64px;border-radius:20px;margin:0 auto 18px;
  background:var(--grad-soft);color:var(--brand-3);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;
}
.article-empty h2{font-size:22px;color:var(--ink-900);font-weight:700;margin-bottom:10px;}
.article-empty p{color:var(--ink-500);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:24px;
  box-shadow:var(--shadow-card);
}
.side-card h3{
  font-size:16px;font-weight:700;color:var(--ink-900);
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.side-links{display:flex;flex-direction:column;gap:4px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:42px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--ink-700);
  transition:background var(--t),color var(--t);
}
.side-links a::after{content:"›";color:var(--ink-300);font-size:16px;}
.side-links a:hover{background:var(--brand-4);color:var(--brand-3);}
.side-card--cta{
  background:linear-gradient(150deg,var(--deep-bg) 0%,var(--deep-bg-2) 100%);
  border-color:transparent;color:rgba(255,255,255,.8);
}
.side-card--cta h3{color:#fff;border-bottom-color:rgba(255,255,255,.14);}
.side-card--cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:18px;}
.side-points{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.side-points li{
  display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.82);
}
.side-points li::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--brand-1);
  margin-top:9px;flex:0 0 auto;
}

/* ---------- 尾部区块 ---------- */
.article-foot{padding:0 0 8px;}
.divider-center{display:flex;justify-content:center;margin:8px 0 40px;}
.related h2{font-size:22px;font-weight:700;color:var(--ink-900);margin-bottom:22px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-4);}
.card__media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(90deg,var(--brand-4),var(--line));}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.4,0,.2,1);}
.card:hover .card__media img{transform:scale(1.04);}
.card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__body h3{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.45;}
.card__body p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300);}
.card--link:hover h3{color:var(--brand-3);}
.back-row{margin-top:36px;display:flex;justify-content:center;}

/* ---------- CTA ---------- */
.cta{
  position:relative;
  color:#fff;
  background-image:
    linear-gradient(135deg,rgba(7,35,30,.92) 0%,rgba(10,122,94,.86) 48%,rgba(20,184,212,.78) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cta__inner{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;
  padding:88px 0;
}
.cta h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.3;color:#fff;}
.cta p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.85);max-width:520px;}
.cta__list{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  font-size:13px;color:#fff;
}
.cta__card{
  background:#fff;border-radius:var(--radius-lg);padding:32px;
  box-shadow:0 24px 60px rgba(7,35,30,.30);
  color:var(--ink-700);
}
.cta__card h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:8px;}
.cta__card p{color:var(--ink-500);font-size:14px;margin-bottom:22px;}
.cta__form{display:flex;flex-direction:column;gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;font-weight:600;color:var(--ink-700);}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#FBFDFC;color:var(--ink-900);
  font-size:15px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(15,180,138,.16);
}
.form-note{font-size:12px;color:var(--ink-500);line-height:1.7;}
.form-status{font-size:13px;display:none;}
.form-status.is-error{display:block;color:var(--danger);}
.form-status.is-ok{display:block;color:var(--success);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep-bg);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.site-footer .logo{color:#fff;}
.site-footer .logo__sub{color:rgba(255,255,255,.6);}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-links a:hover{color:var(--brand-2);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.66);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-contact a{color:var(--brand-2);}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 浮动组件 ---------- */
.floaters{
  position:fixed;right:24px;bottom:28px;z-index:80;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
}
.float-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 22px;border-radius:999px;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 14px 34px rgba(15,180,138,.36);
  transition:transform var(--t),filter var(--t),box-shadow var(--t);
}
.float-cta:hover{transform:translateY(-2px);filter:brightness(1.06);color:#fff;}
.to-top{
  width:48px;height:48px;border-radius:50%;
  background:#fff;color:var(--brand-3);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
  opacity:0;pointer-events:none;
  transition:opacity var(--t),transform var(--t),background var(--t);
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);background:var(--brand-4);}
.mobile-bar{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav__links{display:none;}
  .nav__toggle{display:flex;}
  .article-layout{grid-template-columns:1fr;}
  .side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta__inner{grid-template-columns:1fr;gap:32px;padding:72px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-card{padding:32px 28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .nav{height:60px;}
  .nav__actions .btn{display:none;}
  .article-head{padding:104px 0 32px;}
  .article-meta{gap:10px;}
  .breadcrumb .current{max-width:180px;}
  .article-main{padding:36px 0 56px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:8px;}
  .footer-title{
    height:44px;display:flex;align-items:center;justify-content:space-between;
    margin-bottom:0;border-bottom:1px solid rgba(255,255,255,.10);
  }
  .footer-links,.footer-contact{padding:12px 0 4px;}
  .footer-bottom{flex-direction:column;}
  .floaters{display:none;}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:80;
    height:56px;padding:0 16px;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
  }
  .mobile-bar span{font-size:13px;color:var(--ink-500);}
  .mobile-bar .btn{height:40px;padding:0 18px;font-size:14px;}
  body{padding-bottom:56px;}
}
@media (max-width:520px){
  .article-card{padding:26px 20px;}
  .article-body{font-size:16px;}
  .logo__name{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand-1:#0FB48A;
  --brand-2:#14B8D4;
  --brand-3:#0A7A5E;
  --brand-4:#D6F5EC;
  --accent:#FF8A3D;
  --accent-deep:#E86C1F;
  --accent-soft:#FFF1E6;

  --ink-900:#0B1A17;
  --ink-700:#23403A;
  --ink-500:#5C7A73;
  --ink-300:#A9BDB7;
  --line:#E3EDEA;

  --page-bg:#F4F8F7;
  --card-bg:#FFFFFF;
  --deep-bg:#07231E;
  --deep-bg-2:#0C3129;

  --success:#12A87A;
  --warning:#F2A33C;
  --danger:#E2544A;
  --info:#14B8D4;

  --grad-brand:linear-gradient(135deg,#0FB48A 0%,#14B8D4 100%);
  --grad-soft:linear-gradient(135deg,rgba(15,180,138,.16) 0%,rgba(20,184,212,.16) 100%);

  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;

  --sh-card:0 12px 32px rgba(9,60,50,.08);
  --sh-hover:0 20px 48px rgba(9,60,50,.14);
  --sh-float:0 10px 28px rgba(7,35,30,.28);
  --sh-nav:0 6px 24px rgba(9,60,50,.10);

  --ease:cubic-bezier(.4,0,.2,1);
  --dur:.25s;

  --sp-section:96px;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-3);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--accent-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.3;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:var(--sh-nav);
}
.header__inner{display:flex;align-items:center;gap:24px;height:72px;}

.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(9,60,50,.22);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.5px;}
.logo__sub{font-size:11px;color:rgba(255,255,255,.78);letter-spacing:2px;}
.site-header.is-scrolled .logo__name{color:var(--ink-900);}
.site-header.is-scrolled .logo__sub{color:var(--ink-500);}

.nav__links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav__link{
  position:relative;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:rgba(255,255,255,.92);
  text-shadow:0 1px 8px rgba(0,0,0,.25);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
  white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav__link:hover{color:#fff;}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:#fff;}
.nav__link.is-active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav__link{color:var(--ink-700);text-shadow:none;}
.site-header.is-scrolled .nav__link:hover,
.site-header.is-scrolled .nav__link.is-active{color:var(--brand-1);}

.header__actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);
  color:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.site-header.is-scrolled .nav-toggle{border-color:var(--line);background:#fff;color:var(--ink-900);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  display:none;position:fixed;inset:0;z-index:90;
  background:rgba(7,35,30,.45);backdrop-filter:blur(4px);
}
.drawer.is-open{display:block;}
.drawer__panel{
  position:absolute;top:12px;left:12px;right:12px;
  background:#fff;border-radius:20px;padding:20px;box-shadow:var(--sh-float);
}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer__close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--ink-700);font-size:20px;cursor:pointer;
}
.drawer__link{
  display:flex;align-items:center;min-height:44px;padding:0 14px;border-radius:12px;
  color:var(--ink-700);font-weight:600;font-size:16px;
}
.drawer__link.is-active{background:var(--brand-4);color:var(--brand-3);}
.drawer__cta{margin-top:14px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;min-height:48px;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(9,60,50,.22);}
.btn--primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(9,60,50,.28);}
.btn--ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.45);color:#fff;backdrop-filter:blur(8px);}
.btn--ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.btn--outline{background:#fff;border-color:var(--brand-1);color:var(--brand-3);}
.btn--outline:hover{background:var(--brand-4);color:var(--brand-3);transform:translateY(-2px);}
.btn--sm{padding:11px 20px;min-height:42px;font-size:14px;}
.btn--block{width:100%;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  min-height:380px;
  display:flex;align-items:flex-end;
  padding:150px 0 70px;
  background-image:linear-gradient(180deg,rgba(7,35,30,.82) 0%,rgba(10,122,94,.72) 55%,rgba(20,184,212,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:120px;
  background:linear-gradient(180deg,rgba(244,248,247,0) 0%,var(--page-bg) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:16px;}
.crumbs a{color:rgba(255,255,255,.8);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{color:rgba(255,255,255,.45);}
.crumbs .now{color:#fff;font-weight:600;}
.page-hero h1{
  color:#fff;font-weight:800;letter-spacing:-.4px;
  font-size:clamp(28px,3.8vw,46px);line-height:1.2;
  max-width:900px;
}
.page-hero h1 span{display:block;font-size:clamp(20px,2.4vw,30px);font-weight:700;color:rgba(255,255,255,.9);margin-top:6px;}
.page-hero__desc{
  margin:16px 0 0;max-width:720px;color:rgba(255,255,255,.88);
  font-size:clamp(15px,1.5vw,17px);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);
  color:rgba(255,255,255,.92);font-size:13px;font-weight:600;
  backdrop-filter:blur(6px);
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--grad-brand);display:inline-block;}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0 var(--sp-section);}
.section--deep{background:var(--deep-bg);color:rgba(255,255,255,.86);}
.section--deep h2,.section--deep h3{color:#fff;}

.section-head{max-width:820px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--brand-3);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:28px;height:3px;border-radius:2px;background:var(--grad-brand);}
.section--deep .eyebrow{color:var(--brand-2);}
.section-head h2{font-size:clamp(24px,2.8vw,36px);font-weight:700;}
.section-head p{margin-top:14px;color:var(--ink-500);font-size:16px;}
.section--deep .section-head p{color:rgba(255,255,255,.72);}

.article-lead{max-width:780px;}
.article-lead p{font-size:17px;line-height:1.9;color:var(--ink-700);}
.article-lead p:first-child{font-size:18px;color:var(--ink-900);}
.divider{width:48px;height:3px;border-radius:3px;background:var(--grad-brand);margin:34px 0;}

/* ---------- 对照卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.compare-card{
  position:relative;background:var(--card-bg);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.compare-card--accent{border-color:transparent;}
.compare-card--accent::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:1px;
  background:var(--grad-brand);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  pointer-events:none;
}
.compare-card__head{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.compare-card__icon{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-4);color:var(--brand-3);font-weight:800;font-size:16px;
}
.compare-card__icon--accent{background:var(--accent-soft);color:var(--accent-deep);}
.compare-card h3{font-size:20px;}
.compare-card__note{font-size:14px;color:var(--ink-500);margin:0 0 20px;}

.compare-list{border-top:1px solid var(--line);}
.compare-item{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.compare-item__label{font-size:15px;font-weight:600;color:var(--ink-900);}
.compare-item__sub{display:block;font-size:13px;font-weight:400;color:var(--ink-500);margin-top:2px;}
.status{
  display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);
  white-space:nowrap;
}
.status--ok{background:rgba(18,168,122,.12);color:#0E8A63;}
.status--plan{background:rgba(169,189,183,.22);color:var(--ink-500);}
.status--accent{background:var(--accent-soft);color:var(--accent-deep);}
.status i{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}

/* ---------- 数据徽章 ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;}
.stat{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.stat__num{
  font-size:clamp(28px,3vw,38px);font-weight:800;line-height:1.1;
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:var(--brand-1);
  -webkit-text-fill-color:transparent;
}
.stat__label{display:block;margin-top:8px;font-size:14px;color:var(--ink-500);}

/* ---------- 图文卡片 ---------- */
.media-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:12px;}
.media-card{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.media-card img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.media-card__body{padding:22px;}
.media-card__body h3{font-size:18px;margin-bottom:8px;}
.media-card__body p{font-size:14px;color:var(--ink-500);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--card-bg);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.is-open{background:rgba(214,245,236,.44);border-color:rgba(15,180,138,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-q .bar{width:4px;height:20px;border-radius:2px;background:var(--grad-brand);opacity:.6;flex-shrink:0;transition:opacity var(--dur) var(--ease);}
.faq-item.is-open .faq-q .bar{opacity:1;}
.faq-q .arrow{margin-left:auto;flex-shrink:0;color:var(--brand-3);transition:transform var(--dur) var(--ease);font-size:13px;}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur) var(--ease);}
.faq-a__inner{padding:0 24px 22px 42px;font-size:15px;line-height:1.8;color:var(--ink-700);}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#07231E 0%,#0C3129 55%,#0A7A5E 100%);
  border-radius:var(--r-lg);padding:56px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  color:rgba(255,255,255,.86);box-shadow:var(--sh-float);
}
.cta-block::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,184,212,.35) 0%,rgba(20,184,212,0) 70%);
}
.cta-block h2{color:#fff;font-size:clamp(22px,2.6vw,32px);}
.cta-block p{margin-top:14px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative;z-index:2;}
.cta-panel{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-md);padding:24px;backdrop-filter:blur(8px);
}
.cta-panel__row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.18);font-size:14px;}
.cta-panel__row:last-child{border-bottom:0;}
.cta-panel__row b{color:#fff;font-weight:700;}
.cta-note{font-size:13px;color:rgba(255,255,255,.6);margin-top:14px;}

/* ---------- footer ---------- */
.site-footer{background:var(--deep-bg);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:var(--sp-section);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo__name{color:#fff;}
.footer-brand .logo__sub{color:rgba(255,255,255,.65);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;margin:0;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--brand-2);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.7);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-contact a{color:var(--brand-2);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand-3);
  box-shadow:var(--sh-float);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--maxw:1080px;}
  .cta-block{padding:48px;}
}
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .container{padding:0 24px;}
  .nav__links,.header__actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .compare-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .media-row{grid-template-columns:repeat(2,1fr);}
  .cta-block{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 18px;}
  .header__inner{height:60px;}
  .page-hero{min-height:340px;padding:120px 0 54px;}
  .section--tight{padding:48px 0 56px;}
  .article-lead p,.article-lead p:first-child{font-size:16px;}
  .compare-card{padding:20px;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a__inner{padding:0 18px 20px 36px;}
  .media-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-title{min-height:44px;display:flex;align-items:center;margin-bottom:6px;border-bottom:1px solid rgba(255,255,255,.12);}
  .to-top{right:16px;bottom:16px;width:44px;height:44px;}
}
@media (max-width:479px){
  .stats-band{grid-template-columns:1fr;}
  .cta-block{padding:32px 20px;}
  .hero-tags{gap:8px;}
  .hero-tag{font-size:12px;padding:6px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}
  .compare-card:hover,.media-card:hover,.stat:hover,.btn:hover{transform:none!important;}
}

/* roulang page: category2 */
:root{
  --brand-1:#0FB48A;
  --brand-2:#14B8D4;
  --brand-3:#0A7A5E;
  --brand-4:#D6F5EC;
  --accent:#FF8A3D;
  --accent-deep:#E86C1F;
  --accent-soft:#FFF1E6;
  --ink-900:#0B1A17;
  --ink-700:#23403A;
  --ink-500:#5C7A73;
  --ink-300:#A9BDB7;
  --line:#E3EDEA;
  --page-bg:#F4F8F7;
  --card-bg:#FFFFFF;
  --deep-bg:#07231E;
  --deep-bg-2:#0C3129;
  --success:#12A87A;
  --warning:#F2A33C;
  --danger:#E2544A;
  --info:#14B8D4;
  --grad:linear-gradient(135deg,#0FB48A 0%,#14B8D4 100%);
  --grad-soft:linear-gradient(135deg,rgba(15,180,138,.12) 0%,rgba(20,184,212,.12) 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-card:0 12px 32px rgba(9,60,50,.08);
  --shadow-hover:0 20px 48px rgba(9,60,50,.14);
  --shadow-float:0 10px 28px rgba(7,35,30,.28);
  --shadow-nav:0 6px 24px rgba(9,60,50,.10);
  --ease:cubic-bezier(.4,0,.2,1);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"DIN Alternate",Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--page-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:16px;}
a{color:var(--brand-3);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--accent-deep);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;
  padding:13px 28px;font-size:15px;font-weight:700;letter-spacing:.2px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),filter .25s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(15,180,138,.28);}
.btn--primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(15,180,138,.34);}
.btn--outline{background:transparent;border-color:var(--brand-1);color:var(--brand-3);}
.btn--outline:hover{background:var(--brand-4);color:var(--brand-3);transform:translateY(-2px);}
.btn--ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.42);color:#fff;backdrop-filter:blur(8px);}
.btn--ghost:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.btn--text{background:none;border:none;padding:0;color:var(--brand-3);font-weight:700;}
.btn--text:hover{color:var(--accent-deep);}
.btn--text .arrow{display:inline-block;transition:transform .25s var(--ease);}
.btn--text:hover .arrow{transform:translateX(3px);}
.btn--sm{padding:10px 20px;font-size:14px;}
.btn--block{width:100%;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none;}

/* ---------- 标签与徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--brand-3);background:var(--brand-4);padding:5px 13px;border-radius:999px;}
.tag--accent{background:var(--accent-soft);color:var(--accent-deep);}
.tag--light{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-nav);
}
.site-header__inner{display:flex;align-items:center;gap:28px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo__mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  color:#fff;font-size:20px;font-weight:800;line-height:40px;text-align:center;
  box-shadow:0 8px 18px rgba(15,180,138,.3);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.4px;text-shadow:0 1px 8px rgba(0,0,0,.25);}
.logo__sub{font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.78);text-shadow:0 1px 8px rgba(0,0,0,.25);}
.site-header.is-scrolled .logo__name{color:var(--ink-900);text-shadow:none;}
.site-header.is-scrolled .logo__sub{color:var(--ink-500);text-shadow:none;}

.nav__links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav__link{
  position:relative;padding:10px 14px;font-size:15px;font-weight:600;
  color:rgba(255,255,255,.9);text-shadow:0 1px 8px rgba(0,0,0,.25);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav__link:hover{color:#fff;}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:#fff;}
.nav__link.is-active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav__link{color:var(--ink-700);text-shadow:none;}
.site-header.is-scrolled .nav__link:hover,.site-header.is-scrolled .nav__link.is-active{color:var(--brand-1);}

.site-header__actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.42);
  background:rgba(255,255,255,.14);color:#fff;display:grid;place-items:center;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.26);transform:translateY(-1px);}
.site-header.is-scrolled .icon-btn{border-color:var(--line);background:#fff;color:var(--ink-700);}
.site-header.is-scrolled .icon-btn:hover{color:var(--brand-1);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.42);
  background:rgba(255,255,255,.14);flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.menu-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:#fff;transition:background .25s var(--ease);}
.site-header.is-scrolled .menu-toggle{border-color:var(--line);background:#fff;}
.site-header.is-scrolled .menu-toggle span{background:var(--ink-900);}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:120;display:none;}
.drawer.is-open{display:block;}
.drawer__mask{position:absolute;inset:0;background:rgba(7,35,30,.5);backdrop-filter:blur(3px);}
.drawer__panel{
  position:absolute;top:12px;left:12px;right:12px;background:#fff;border-radius:20px;
  padding:20px 20px 26px;box-shadow:var(--shadow-float);
  animation:drawerIn .28s var(--ease);
}
@keyframes drawerIn{from{opacity:0;transform:translateY(-12px);}to{opacity:1;transform:none;}}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer__close{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  font-size:22px;line-height:1;color:var(--ink-700);
}
.drawer__nav{display:flex;flex-direction:column;margin-bottom:18px;}
.drawer__nav a{
  min-height:44px;display:flex;align-items:center;padding:0 12px;border-radius:12px;
  font-size:15px;font-weight:600;color:var(--ink-700);
}
.drawer__nav a:hover{background:var(--brand-4);color:var(--brand-3);}
.drawer__nav a.is-active{background:var(--grad-soft);color:var(--brand-3);}
.logo--dark .logo__name{color:var(--ink-900);text-shadow:none;}
.logo--dark .logo__sub{color:var(--ink-500);text-shadow:none;}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;min-height:380px;
  padding:150px 0 64px;
  background:
    linear-gradient(180deg,rgba(7,35,30,.80) 0%,rgba(10,122,94,.78) 55%,rgba(20,184,212,.66) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,180,138,.42),rgba(15,180,138,0) 70%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#fff;font-weight:600;}
.page-hero__title{
  font-size:clamp(28px,3.8vw,46px);font-weight:800;line-height:1.2;letter-spacing:-.5px;
  color:#fff;max-width:900px;margin-bottom:18px;
}
.page-hero__title em{font-style:normal;display:block;font-size:.62em;font-weight:600;color:rgba(255,255,255,.82);margin-top:12px;letter-spacing:0;}
.page-hero__desc{max-width:720px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.9);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-tags li{
  font-size:13px;font-weight:700;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);
  backdrop-filter:blur(6px);color:#fff;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:#fff;}
.section--deep{background:var(--deep-bg);color:rgba(255,255,255,.82);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-3);background:var(--brand-4);padding:6px 14px;border-radius:999px;margin-bottom:16px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;}
.section-head .rule{width:48px;height:3px;border-radius:999px;background:var(--grad);margin:18px 0 0;}
.section-head p{margin-top:16px;color:var(--ink-500);font-size:16px;}
.section--deep .section-head h2{color:#fff;}
.section--deep .section-head p{color:rgba(255,255,255,.72);}
.section--deep .section-head .eyebrow{background:rgba(255,255,255,.12);color:#fff;}

/* ---------- 介绍区 ---------- */
.intro-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:start;}
.intro-body{max-width:780px;}
.intro-body p{font-size:17px;line-height:1.9;color:var(--ink-700);margin-bottom:20px;}
.intro-body p:last-child{margin-bottom:0;}
.intro-body strong{color:var(--ink-900);}
.side-card{
  background:#fff;border-radius:var(--r-lg);padding:28px;border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.side-card h3{font-size:18px;margin-bottom:16px;}
.side-card ul{display:flex;flex-direction:column;gap:12px;}
.side-card li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-500);line-height:1.7;}
.side-card li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;background:var(--grad);
}

/* ---------- 步骤流程 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  position:relative;z-index:1;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-1);}
.step-card__num{
  width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;
  font-family:var(--font-num);font-size:19px;font-weight:800;display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(15,180,138,.28);margin-bottom:18px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--ink-500);line-height:1.75;}
.step-card__img{margin-top:18px;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-sm);background:linear-gradient(90deg,var(--brand-4),var(--line));}
@media (min-width:1024px){
  .steps-grid{position:relative;}
  .steps-grid::before{
    content:"";position:absolute;top:51px;left:7%;right:7%;height:2px;z-index:0;
    background:linear-gradient(90deg,rgba(15,180,138,.35),rgba(20,184,212,.35));
  }
}

/* ---------- 常见误区 ---------- */
.mistake-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.mistake-card{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.mistake-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.mistake-card__icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:14px;background:var(--accent-soft);color:var(--accent-deep);
  display:grid;place-items:center;font-size:20px;font-weight:800;font-family:var(--font-num);
}
.mistake-card h3{font-size:17px;margin-bottom:8px;}
.mistake-card p{font-size:15px;color:var(--ink-500);line-height:1.75;}
.mistake-card .fix{display:block;margin-top:10px;font-size:14px;color:var(--brand-3);font-weight:600;}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;}
.check-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:linear-gradient(90deg,var(--brand-4),var(--line));
}
.check-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;}
.check-figure__badge{
  position:absolute;left:20px;bottom:20px;background:rgba(255,255,255,.94);border-radius:14px;
  padding:12px 18px;box-shadow:var(--shadow-card);font-size:14px;font-weight:700;color:var(--ink-900);
}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;}
.check-list .dot{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-4);color:var(--brand-3);
  display:grid;place-items:center;font-size:14px;font-weight:800;margin-top:2px;
}
.check-list h3{font-size:16px;margin-bottom:4px;}
.check-list p{font-size:15px;color:var(--ink-500);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.is-open{background:rgba(214,245,236,.42);border-color:var(--brand-1);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;background:none;border:none;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q::before{
  content:"";flex:0 0 4px;width:4px;height:22px;border-radius:3px;background:var(--grad);opacity:.6;
  transition:opacity .25s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q span{flex:1;}
.faq-arrow{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  position:relative;transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.faq-arrow::after{
  content:"";position:absolute;left:6px;top:6px;width:7px;height:7px;border-right:2px solid var(--brand-3);
  border-bottom:2px solid var(--brand-3);transform:rotate(45deg);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);border-color:var(--brand-1);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
.faq-a p{padding:0 24px 22px 46px;font-size:15px;line-height:1.85;color:var(--ink-700);}

/* ---------- 结尾 CTA ---------- */
.cta-block{
  background:
    linear-gradient(135deg,rgba(7,35,30,.94),rgba(10,122,94,.92)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  color:#fff;border-radius:0;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:16px;}
.cta-copy p{color:rgba(255,255,255,.78);font-size:16px;line-height:1.85;margin-bottom:22px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:center;font-size:15px;color:rgba(255,255,255,.86);}
.cta-points .dot{width:8px;height:8px;border-radius:3px;background:var(--grad);}
.form-card{background:#fff;border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-float);color:var(--ink-700);}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--ink-500);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink-900);background:#fff;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(15,180,138,.16);
}
.form-status{font-size:13.5px;margin-top:12px;min-height:20px;}
.form-status.is-ok{color:var(--success);}
.form-status.is-err{color:var(--danger);}
.form-note{font-size:12.5px;color:var(--ink-500);margin-top:10px;line-height:1.6;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep-bg);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{margin-bottom:18px;}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.footer-title{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-links a:hover{color:var(--brand-2);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-contact a{color:var(--brand-2);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding-top:24px;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 浮动组件 ---------- */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
.to-top{
  width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-700);
  font-size:18px;display:grid;place-items:center;box-shadow:var(--shadow-card);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),color .25s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{color:var(--brand-1);transform:translateY(-3px);}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:85;height:56px;
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.mobile-bar span{font-size:13.5px;font-weight:600;color:var(--ink-700);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav__links{display:none;}
  .menu-toggle{display:flex;}
  .site-header__actions .icon-btn{display:none;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .check-grid{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .site-header__inner{height:60px;gap:14px;}
  .logo__mark{width:34px;height:34px;font-size:17px;line-height:34px;border-radius:10px;}
  .logo__name{font-size:15px;}
  .logo__sub{font-size:10px;letter-spacing:1.6px;}
  .site-header__actions .btn{display:none;}
  .page-hero{min-height:320px;padding:112px 0 48px;}
  .page-hero__desc{font-size:15.5px;}
  .hero-tags{overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;}
  .hero-tags li{flex:0 0 auto;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .steps-grid{grid-template-columns:1fr;gap:18px;}
  .mistake-grid{grid-template-columns:1fr;gap:18px;}
  .step-card,.mistake-card,.side-card{padding:20px;}
  .form-card{padding:22px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a p{padding:0 18px 18px 40px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
  .float-cta{right:16px;bottom:74px;}
  .float-cta .btn{display:none;}
  .mobile-bar{display:flex;}
  .site-footer{padding-bottom:88px;}
}
@media (max-width:480px){
  .page-hero__title{font-size:26px;}
  .cta-points li{font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .step-card:hover,.mistake-card:hover,.btn:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --brand-1:#0FB48A;
  --brand-2:#14B8D4;
  --brand-3:#0A7A5E;
  --brand-4:#D6F5EC;
  --accent:#FF8A3D;
  --accent-deep:#E86C1F;
  --accent-soft:#FFF1E6;
  --ink-900:#0B1A17;
  --ink-700:#23403A;
  --ink-500:#5C7A73;
  --ink-300:#A9BDB7;
  --line:#E3EDEA;
  --page-bg:#F4F8F7;
  --card-bg:#FFFFFF;
  --deep-bg:#07231E;
  --deep-bg-2:#0C3129;
  --success:#12A87A;
  --warning:#F2A33C;
  --danger:#E2544A;
  --info:#14B8D4;
  --grad:linear-gradient(135deg,#0FB48A 0%,#14B8D4 100%);
  --grad-soft:linear-gradient(135deg,rgba(15,180,138,.12) 0%,rgba(20,184,212,.12) 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 12px 32px rgba(9,60,50,.08);
  --shadow-hover:0 20px 48px rgba(9,60,50,.14);
  --shadow-float:0 10px 28px rgba(7,35,30,.28);
  --shadow-nav:0 6px 24px rgba(9,60,50,.10);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--page-bg);
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand-3);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;
}
.skip-link:focus{left:0}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.22);
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-solid{
  background:#FFFFFF;
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-nav);
}
.nav__inner{
  height:72px;
  display:flex;align-items:center;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(9,60,50,.20);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__name{font-size:16px;font-weight:800;letter-spacing:.02em;color:#fff}
.logo__sub{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.72)}
.is-solid .logo__name{color:var(--ink-900)}
.is-solid .logo__sub{color:var(--ink-500)}

.nav__links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__link{
  position:relative;
  padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;
  color:rgba(255,255,255,.92);
  text-shadow:0 1px 8px rgba(0,0,0,.25);
  transition:color var(--ease),background var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__link:hover{color:#fff}
.is-solid .nav__link{color:var(--ink-700);text-shadow:none}
.is-solid .nav__link:hover,.is-solid .nav__link.is-active{color:var(--brand-3)}

.nav__actions{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.30);
  background:rgba(255,255,255,.10);
}
.nav__toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav__toggle span::before,.nav__toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.nav__toggle span::before{top:-6px}
.nav__toggle span::after{top:6px}
.is-solid .nav__toggle{border-color:var(--line);background:#fff}
.is-solid .nav__toggle span,.is-solid .nav__toggle span::before,.is-solid .nav__toggle span::after{background:var(--ink-900)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),filter var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(15,180,138,.28)}
.btn--primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(15,180,138,.34)}
.btn--ghost{
  color:#fff;border:1px solid rgba(255,255,255,.55);
  background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.btn--ghost:hover{background:rgba(255,255,255,.20);transform:translateY(-2px)}
.btn--outline{
  color:var(--brand-3);background:#fff;border:1px solid var(--brand-4);
}
.btn--outline:hover{background:var(--brand-4);transform:translateY(-2px)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(255,138,61,.28)}
.btn--accent:hover{background:var(--accent-deep);transform:translateY(-2px)}
.btn--sm{min-height:40px;padding:0 20px;font-size:14px}
.btn--block{width:100%}
.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none!important}

/* ---------- 通用渐变描边 ---------- */
.grad-ring{position:relative}
.grad-ring::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;
  mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  mask-composite:exclude;
  pointer-events:none;
  opacity:.9;
}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  min-height:380px;
  display:flex;align-items:flex-end;
  padding:158px 0 76px;
  color:#fff;
  background-color:#0A7A5E;
  background-image:
    linear-gradient(135deg,rgba(7,43,36,.88) 0%,rgba(10,122,94,.80) 52%,rgba(20,184,212,.66) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,184,212,.34) 0%,rgba(20,184,212,0) 70%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.78);
  margin-bottom:20px;position:relative;z-index:2;
}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{color:rgba(255,255,255,.45)}
.breadcrumb .current{color:#fff;font-weight:600}
.page-hero h1{
  position:relative;z-index:2;
  font-size:clamp(28px,3.8vw,46px);
  font-weight:800;line-height:1.22;letter-spacing:-.5px;
  max-width:900px;
  text-shadow:0 2px 18px rgba(0,0,0,.24);
}
.page-hero h1 .accent-line{
  display:block;font-size:clamp(15px,1.5vw,18px);
  font-weight:600;letter-spacing:.02em;
  color:rgba(255,255,255,.82);
  margin-top:12px;text-shadow:none;
}
.hero__lead{
  position:relative;z-index:2;
  margin-top:18px;max-width:660px;
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.8;color:rgba(255,255,255,.88);
}
.hero__badges{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;
}
.stat{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 20px;border-radius:999px;
  background:rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  min-width:132px;
}
.stat__num{
  font-size:19px;font-weight:800;letter-spacing:.01em;
  background:linear-gradient(135deg,#FFFFFF 0%,#BFF3E6 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:#E7FBF5;
}
.stat__label{font-size:12px;color:rgba(255,255,255,.78);letter-spacing:.02em}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--deep{background:var(--deep-bg);color:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-3);
  background:var(--brand-4);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section--deep .eyebrow{background:rgba(255,255,255,.10);color:#9FEBD6}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;line-height:1.3;color:var(--ink-900);
}
.section--deep .section-head h2{color:#fff}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-500);line-height:1.8}
.section--deep .section-head p{color:rgba(255,255,255,.72)}
.divider{width:48px;height:3px;border-radius:3px;background:var(--grad);margin-bottom:18px}
.section-head--center .divider{margin-left:auto;margin-right:auto}

/* ---------- 介绍正文 ---------- */
.prose{max-width:780px;margin:0 auto}
.prose p{font-size:17px;line-height:1.9;color:var(--ink-700);margin-bottom:22px}
.prose p:last-child{margin-bottom:0}
.prose .lead{font-size:18px;color:var(--ink-900);font-weight:500}
.prose strong{color:var(--brand-3);font-weight:700}

/* ---------- 图文交替 ---------- */
.feature-list{display:flex;flex-direction:column;gap:56px}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.feature-row--reverse .feature-media{order:2}
.feature-row--reverse .feature-body{order:1}
.feature-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  background:linear-gradient(100deg,var(--brand-4),var(--line));
  aspect-ratio:16/10;
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.feature-media:hover img{transform:scale(1.03)}
.feature-body{
  background:var(--card-bg);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease);
}
.feature-body:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-body h3{font-size:21px;font-weight:700;color:var(--ink-900);line-height:1.4}
.feature-body p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-500)}
.feature-points{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feature-points li{
  position:relative;padding-left:20px;font-size:15px;color:var(--ink-700);
}
.feature-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:3px;background:var(--grad);
}
.feature-metric{
  display:inline-flex;align-items:baseline;gap:10px;
  margin-top:22px;padding:10px 18px;border-radius:999px;
  background:var(--grad-soft);
  border:1px solid var(--brand-4);
}
.feature-metric b{
  font-size:20px;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--brand-3);
}
.feature-metric span{font-size:13px;color:var(--ink-500)}

/* ---------- 更新节奏条 ---------- */
.rhythm-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.rhythm-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-md);
  padding:26px 24px;
  transition:background var(--ease),transform var(--ease),border-color var(--ease);
}
.rhythm-card:hover{background:rgba(255,255,255,.11);transform:translateY(-4px);border-color:rgba(20,184,212,.45)}
.rhythm-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--grad);color:#fff;font-weight:800;font-size:15px;
  margin-bottom:16px;
}
.rhythm-card h3{font-size:17px;font-weight:700;color:#fff}
.rhythm-card p{margin-top:10px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.70)}

/* ---------- 推荐卡（不等宽） ---------- */
.pick-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr;
  gap:24px;
  align-items:stretch;
}
.pick-card{
  display:flex;flex-direction:column;
  background:var(--card-bg);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.pick-card__media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(100deg,var(--brand-4),var(--line))}
.pick-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.pick-card:hover .pick-card__media img{transform:scale(1.04)}
.pick-card__body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.03em;
  color:var(--brand-3);background:var(--brand-4);
  padding:5px 12px;border-radius:999px;width:fit-content;
}
.pick-card h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.42}
.pick-card p{font-size:14.5px;line-height:1.78;color:var(--ink-500);flex:1}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-3);font-size:14px;font-weight:600;
}
.text-link svg{transition:transform var(--ease)}
.text-link:hover{color:var(--accent-deep)}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:var(--brand-4);background:rgba(214,245,236,.30);box-shadow:var(--shadow-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;
  border-radius:0 4px 4px 0;background:var(--grad);opacity:.6;
  transition:opacity var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-4);color:var(--brand-3);
  font-size:15px;font-weight:700;
  transition:transform var(--ease),background var(--ease),color var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--grad);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{padding:0 24px 22px 24px;font-size:15px;line-height:1.85;color:var(--ink-700)}

/* ---------- CTA ---------- */
.section--cta{
  position:relative;
  background-color:var(--deep-bg);
  background-image:
    linear-gradient(135deg,rgba(7,35,30,.92) 0%,rgba(10,122,94,.84) 100%),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  color:#fff;
}
.cta-wrap{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.cta-copy h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.32;color:#fff;
}
.cta-copy p{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.80);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cta-form{
  background:#fff;border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-float);
}
.cta-form h3{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.cta-form > p.hint{font-size:14px;color:var(--ink-500);margin-bottom:20px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;font-weight:600;color:var(--ink-700)}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink-900);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:120px;padding:12px 16px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(15,180,138,.16);
}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-300)}
.form-note{font-size:12.5px;color:var(--ink-500);margin-top:14px}
.form-status{margin-top:12px;font-size:13.5px;font-weight:600;min-height:20px}
.form-status.is-ok{color:var(--success)}
.form-status.is-err{color:var(--danger)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep-bg);color:rgba(255,255,255,.76);padding:72px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo__name{color:#fff}
.footer-brand .logo__sub{color:rgba(255,255,255,.62)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:var(--brand-2)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.68)}
.footer-contact b{color:#fff;font-weight:600}
.footer-contact a{color:var(--brand-2)}
.footer-contact a:hover{text-decoration:underline}
.footer-bottom{
  margin-top:52px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-float);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-3px)}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(7,35,30,.45);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.nav-drawer.is-open{opacity:1;visibility:visible}
.nav-drawer__panel{
  position:absolute;top:12px;right:12px;left:12px;
  background:#fff;border-radius:20px;padding:20px;
  box-shadow:var(--shadow-float);
  transform:translateY(-12px);transition:transform var(--ease);
}
.nav-drawer.is-open .nav-drawer__panel{transform:translateY(0)}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.nav-drawer__close{
  width:40px;height:40px;border-radius:12px;background:var(--page-bg);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-700);
}
.nav-drawer__links{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.nav-drawer__links a{
  min-height:44px;display:flex;align-items:center;
  padding:0 14px;border-radius:12px;
  font-size:15.5px;font-weight:600;color:var(--ink-700);
}
.nav-drawer__links a:hover{background:var(--brand-4);color:var(--brand-3)}
.nav-drawer__links a.is-active{background:var(--grad-soft);color:var(--brand-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav__links{display:none}
  .nav__toggle{display:flex}
  .nav__actions .btn--primary{display:none}
  .feature-row{grid-template-columns:1fr;gap:28px}
  .feature-row--reverse .feature-media{order:1}
  .feature-row--reverse .feature-body{order:2}
  .rhythm-grid{grid-template-columns:repeat(2,1fr)}
  .pick-grid{grid-template-columns:1fr 1fr}
  .pick-grid .pick-card:first-child{grid-column:1 / -1}
  .cta-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:132px 0 62px;min-height:340px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav__inner{height:60px;gap:12px}
  .logo__mark{width:34px;height:34px;font-size:17px;border-radius:10px}
  .logo__name{font-size:15px}
  .page-hero{padding:112px 0 52px;min-height:320px}
  .hero__badges{gap:10px;margin-top:26px}
  .stat{min-width:calc(50% - 5px);flex:1 1 calc(50% - 5px);padding:10px 16px}
  .feature-body{padding:22px}
  .rhythm-grid{grid-template-columns:1fr}
  .pick-grid{grid-template-columns:1fr}
  .faq-q{padding:16px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px 18px}
  .cta-form{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .btn:hover,.pick-card:hover,.feature-body:hover,.rhythm-card:hover{transform:none!important}
}